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Home My WebLink AboutR-361466GENERAL NOTES AN EROSION CONTROL SYSTEM USING THE MINIMUM BMP'S IS TO BE INSTALLED PRIOR TO ANY CLEARING OR GRADING. ADDITIONAL EROSION CONTROLS MAY BE REQUIRED BY THE ENGINEER AS WEATHER AND FIELD CONDITIONS DICTATE. LOCATIONS FOR STOCKPILED MATERIAL MUST BE APPROVED BY THE ENGINEER /PROJECT MANAGER AT LEAST 24 HOURS IN ADVANCE OF ANY DUMPING. THE CONTRACTOR SHALL BE RESPONSIBLE FOR FULL COMPLIANCE WITH THE WASHINGTON STATE "DROPPING LOAD OR OTHER MATERIALS - COVERING" (RCW 46.61.655.3/4) AND KING COUNTY CODE "UNSECURED LOADS" (KCC 10.12.0408). ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION. APPROVAL OF THIS PLAN IS FOR EROSION /SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR RETENTION FACILITIES. TESC PLAN & WRITTEN CONSTRUCTION SEQUENCE A TEMPORARY EROSION & CONTROL PLAN AND WRITTEN CONSTRUCTION SEQUENCE DESCRIBING HOW CONSTRUCTION AND EROSION CONTROL WILL PROGRESS, RESTORATION BY SECTION, AND PROTECTION OF STOCKPILE AREAS IS REQUIRED. THE CONSTRUCTION SEQUENCE WILL BE REVIEWED WITH THE ENGINEER AT THE PRECONSTRUC110N MEETING. THE CONTRACTOR SHALL ALSO DEVELOP A 'SPILL RESPONSE" PLAN AND IDENTIFY PERSON(S) RESPONSIBLE FOR IMPLEMENTING THE PLAN IF A SPILL OF A DANGEROUS OR HAZARDOUS WASTE SHOULD OCCUR. ALL REQUIRED SEDIMENTATION /EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND /OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND /OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION /SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITEE. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACIIVTIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. TEMPORARY EROSION CONTROL EXPOSED SOIL MUST BE COVERED AT THE END OF THE CONSTRUCTION WEEK AND ALSO AT THE POSSIBLE THREAT OF RAIN. THE CONTRACTOR MUST HAVE A SUFFICIENT AMOUNT OF MATERIALS FOR PLASTIC COVERING TO PROVIDE EROSION CONTROL FOR THE SITE AND EMERGENCY PURPOSES. DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTRIBUTED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UNWORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING OR OTHER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD. SEDIMENT TRAPPING DEWATERING DEVICE, IF NEEDED, SHALL BE DISCHARGED WHERE SEDIMENT, AND /OR OTHER POLLUTANTS, WILL NOT ENTER THE DRAINAGE SYSTEM. PER DEPARTMENT OF ECOLOGY GUIDELINES, WASTEWATER FROM PORTLAND CEMENT CONCRETE, MASONRY, AND ASPHALT CONCRETE CUTTING OPERATIONS SHALL NOT BE DISCHARGED TO STORM DRAINAGE SYSTEMS OR SURFACE WATERS. SEDIMENT AND GRIT CONTAMINATION FROM CUTTING OPERATIONS SHALL BE PREVENTED FROM ENTERING THE STORM DRAINAGE SYSTEM OR SURFACE WATERS. BMP MAINTENANCE ALL TEMPORARY AND PERMANENT EROSION AND SEDIMENTATION BMP'S SHALL BE INSPECTED DAILY AND SUBSEQUENTLY MAINTAINED PER THE WASHINGTON STATE STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN AND THE DEVELOPMENT STANDARDS SO THAT THEY FUNCTION AS INTENDED UNTIL THE SITE HAS BEEN PERMANENTLY STABILIZED, AND THE POTENTIAL FOR ON -SITE EROSION HAS PASSED. AT NO TIME SHALL MORE THAN 0.5 FEET OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED JUST PRIOR TO FINAL INSPECTION APPROVAL. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM. c I c I NOTES 1. PLACE AT DOWN GRADIENT EDGE OF AREAS TO BE CLEARED TO PROTECT STREAM & WETLANDS OUTSIDE OF GRADING LIMITS, 2. CONTRACTOR SHALL REMOVE ACCUMULATED SEDIMENT FROM FENCE WHEN IT REACHES Y3 OF FENCE HEIGHT. 6' MAX 8" MIN. FILTER FABRIC MATERIAL PROVIDE 3/4" TO 11/2" GRAVEL BACKFILL GRUB SURFACE FOR TIGHT SEAL ALTERNATE: STEEL FENCE POSTS ELEVATION SILT FENCE NTS DUST CONTROL SECTION FILTER FABRIC MATERIAL 36" WIDE ROLLS USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO POST SEAL FILTER MATERIAL AGAINST GROUND SURFACE PREVENTATIVE MEASURES TO MINIMIZE THE WIND TRANSPORT OF SOIL SHALL BE TAKEN WHEN ADAPTOR SKIRT A TRAFFIC HAZARD MAY BE CREATED OR WHEN SEDIMENT TRANSPORTED BY THE WIND IS WITHIN 3" TO 5" LIKELY TO BE DEPOSITED IN DRAINAGE WAYS OR WATER RESOURCES. WHEN USING WATER FOR DUST CONTROL, SPRAY UNTIL SOIL IS WET BUT RUNOFF IS NOT INITIATED. PAVED STREETS SHALL BE SWEPT DAILY FOLLOWING CONSTRUCTION ACTIVITIES. GEOTEXTILE FA[ PERMANENT EROSION CONTROL ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED BY LANDSCAPING AND REVEGETATION (SEE PLANS). UNDERGROUND UTILITY LINES WHEN CONSTRUCTING UNDERGROUND UTILITY LINES, NO MORE TRENCH SHALL BE OPENED THAN CAN BE CLOSED IN A SINGLE DAY, OR MORE THAN 500 FEET, WHICHEVER IS LESS. EXCAVATED MATERIAL SHALL BE PLACED ON THE DOWNHILL SIDE OF THE TRENCH WHERE CONSISTENT WITH THE SAFETY AND SPACE CONSIDERATIONS. TEMPORARY TRENCH DEWATERING DEVICES SHALL NOT BE DISCHARGED INTO SURFACE WATERS OR TO THE STORM DRAIN SYSTEM WITHOUT PRIOR TREATMENT. FOR UTILITY TRENCHING AND OTHER CLEARING AND GRADING WORK IN STREET RIGHTS -OF -WAY, EROSION AND SEDIMENTATION CONTROL BMP'S, PER THE STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN, AND STANDARD DETAILS SHALL BE USED. THE BMP'S SHALL BE MAINTAINED DAILY. EASEMENTS ALL PUBLIC AND PRIVATE EASEMENTS SHALL BE PROTECTED, AND ALL EASEMENT RIGHTS MAINTAINED. NOTES TOE IN SHEETING IN 4" X 6" TRENCH A 1. TIRES, SANDBAGS, OR EQUIVALENT MAY MIN OF 8' SETBACK FROM TOP OF SLOPE. BE USED TO WEIGHT PLASTIC SHEETING. BACKFILL WITH WASHED ROCK 2. SEAMS BETWEEN SHEETS MUST CONVEY RUNOFF TO OVERLAP A MINIMUM OF 12" AND BE APPROVED LOCATION WEIGHTED OR TAPED. 10' MAX 3. PLASTIC SHEETING SHALL HAVE A MINIMUM THICKNESS OF 6 MIL 4. DUE TO RAPID RUNOFF CAUSED BY PLASTIC SHEETING, THIS METHOD SHALL NOT BE USED UPSLOPE OF AREAS THAT MIGHT BE ADVERSELY IMPACTED BY CONCENTRATED RUNOFF. \/ 5. BERM OR SWALE AT TOP OF SLOPE AS DIRECTED BY CITY CLEARING AND GRADING INSPECTOR. 6. DITCH AT BASE OF SLOPE AS REQUIRED TERMINATE AT BY CITY CLEARING AND GRADING LEVEL AREA. FOLD PROVIDE ENERGY 3' MIN INSPECTOR. DISCHARGE TO APPROVED UNDER 4" & STAPLE DISSIPATION AT TOE y LOCATION. AT 12" INTERVALS WHEN NEEDED PLASTIC COVERING NTS 0=11711AI STRAP ACCUMULATION CATCH BASIN INLET PROTECTION INSERT NTS NOTES: 1. INSERT SHALL BE INSTALLED PRIOR TO CLEARING AND GRADING ACTIVITY. OR UPON PLACEMENT OF A NEW CATCH BASIN. 2. SEDIMENT SHALL BE REMOVED FROM THE UNIT WHEN IT BECOMES HALF FULL. 3. SEDIMENT REMOVAL SHALL BE ACCOMPLISHED BY REMOVING THE INSERT, EMPTYING, AND RE- INSERTING IT INTO THE CATCH BASIN. 4. CATCH BASIN INSERTS SHALL BE USED FOR TEMPORARY STORMWATER TREATMENT DURING CONSTRUCTION. EXISTING CATCH BASINS MAY BE EQUIPPED WITH INSERTS FOR SEDIMENT CONTROL DURING CONSTRUCTION AND RECONFIGURED IN NEWLY INSTALLED CATCH BASINS AS THE WORK PROGRESSES. EACH INSERT MAY BE REMOVED AND RE- INSTALLED ONLY ONCE, AND ONLY IF THE INSERT REMAINS INTACT AND IN FULL WORKING CONDITION, SUBJECT TO THE APPROVAL OF THE ENGINEER, AND IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS. CATCH BASIN INSERTS REQUIRE AT LEAST WEEKLY INSPECTION, AND MAINTENANCE IF NEEDED. 5. CATCH BASIN INSERTS DO NOT MEET SPILL CONTAINMENT REQUIREMENTS AND CANNOT BE USED AS SUCH. METHODS OF POTENTIAL SPILL- CONTAINMENT SHALL BE ADDRESSED IN A TEMPORARY WATER POLLUTION /EROSION CONTROL PLAN. 6. "WATER POLLUTION /EROSION CONTROL PLAN" IS TO BE PREPARED BY THE CONTRACTOR PER THE SPECIAL PROVISIONS. R- 361466 CALL 3 WORKING DAYS BEFORE YOU DIG: 811 t 00 nLvIJL.0 IV VvnrVnm IV 1iVIW IRUVIIVIY a= RG1iVRUJ. Ivu RCYIJI 1 VIYJ vJ nJl vi LVIY o oeMV' Tso �. o, was„ R "Io _ _ z SURVEYED: KEG DRAWN BY: HUT DESIGN BV: HJT CHECK BY: NJD 3K3P� 753 9th Ave N 2502Je8ersonAve Suffle,WA98109 Tam, WA 98402 z �� ; CITY OF RENTON Public Works Department SOUTH LAKE WASHINGTON ROADWAY IMPROVEMENTS q DRAWING NO. 13 PROJECT NO. 11156 FED AID NO. THIS SHEET. RECORD DRAWINGS ? 5506 w� \k rin�o PROJ MGR: NJD 1253)627 -0720 PREPARED BY KPG, JULY 2014 APPROVED FOR CONSTRUCTION SITE PREPARATION & TESC DETAILS DATE: FEB 2012 VIAL aN�� `, 0A FILE: 08046TESCDET01.dwg www.l86.1640 xwrr.l�g.com BASED ON CONSTRUCTION RECORDS BY: DATE: O SHEET NO. 13 OF 53 NUMBER REVISION DESCRIPTION BY APP. DATE t 00 m [_] a= az o = O 1 o-° �0 1 o �^ 3 r z